Hi notageek! Yes, actually, I do. You need a program which stops your computer from instantly sharing it's info with everyone it meets. PC's can be far too open! Naviscope 8.70 allows you to hide your system info and your page refferers. It also blocks cookies, ads, scripts etc. I assume this would assist you.

Ah, I see! Notageek? Do you have Administrative privileges on your PC? Or, is it more like a Rooming House with lots of users? I recall some apps such as given by Tony above but I'll have to search for them.